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以中华优秀传统文化为引领的高校思想政治工作探索实践——以北京中医药大学为例

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中医教育 2017年第3期36卷 27-29页

作者：徐兰靳琦董玲裴纹萱龚腾飞童佳欢北京中医药大学北京100029

中华优秀传统文化中丰富的哲学思想、人文精神、教化思想、道德理念,是进一步加强和改进新形势下思想政治教育工作的强大力量。高校思想政治教育工作的主要对象是青年。北京中医药大学注重以文化人、实践育人,从打造"青年马克思主义者... 详细信息

中华优秀传统文化中丰富的哲学思想、人文精神、教化思想、道德理念,是进一步加强和改进新形势下思想政治教育工作的强大力量。高校思想政治教育工作的主要对象是青年。北京中医药大学注重以文化人、实践育人,从打造"青年马克思主义者培养工程"、开展青年教师社会实践品牌活动、打造强有力的新媒体传播阵营等方面,结合线上线下文化传承、贯穿校内校外实践开展,用中华优秀传统文化无声地滋养道德情操,凝练价值共识,不断开创新形势下我校思想政治教育工作新局面,为实现伟大的中国梦、中医梦提供坚强的精神保障与文化支撑。

关键词：中华优秀传统文化思想政治工作以文化人高校青年

Dual-quaternion-based modeling and control for motion tracking of a tumbling target

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Journal of Systems Engineering and Electronics 2019年第5期30卷 985-994页

作者： PENG xuan SHI Xiaoping gong Yupeng Control and Simulation Center Harbin Institute of TechnologyHarbin 150001China Research Center of Satellite Technology Harbin Institute of TechnologyHarbin 150001China

This paper investigates the problem of controlling a chasing spacecraft(chaser)to track and rendezvous with an uncontrolled *** on the actual situation,the torque-free motion of an axisymmetric prolate rigid body is employed to represent the short-term attitude motion of the tumbling *** taking advantage of the dual quaternion’s compact and efficient description of the general rigid motion,the coupled and integrated model of the 6-degree-of-freedom(6-DOF)relative motion between the chaser and the tumbling target is derived in the chaser’s body fixed frame after taking full consideration of coordinate *** on the logarithm of dual quaternion,a sliding mode control(SMC)law based on the exponential reaching law and the continuous relay function is brought forward to address the problem of synchronization control of the 6-DOF relative *** results illustrate the effectiveness of the proposed method.

关键词： tumbling target dual-quaternion coupled dynamics relative motion

Low lighting image enhancement using local maximum color value prior

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Frontiers of Computer Science 2016年第1期10卷 147-156页

作者： xuan DONG Jiangtao wen Department of Computer Science and Technology Tsinghua University Beijing 100084 China

We study the problem of low lighting image en- hancement. Previous enhancement methods for images un- der low lighting conditions usually fail to consider the factor of image degradation during image formation. As a result, the lost contrast could not be recovered after enhancement. This paper will adaptively recover the contrast and adjust the exposure for low lighting images. Our first contribution is the modeling of image degradation in low lighting con- ditions. Then, the local maximum color value prior is pro- posed, i.e., in most regions of well exposed images, the lo- cal maximum color value of a pixel will be very high. By combining the image degradation model and local maximum color value prior, we propose to recover the un-degraded im- ages under low lighting conditions. Last, an adaptive expo- sure adjustment module is proposed to obtain the final result. We show that our approach enables better enhancement com- paring with popular image editing tools and academic algo- rithms.

关键词： low lighting enhancement image degradationmodel

A pixel-based outlier-free motion estimation algorithm for scalable video quality enhancement

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Frontiers of Computer Science 2015年第5期9卷 729-740页

作者： xuan DONG Jiangtao wen Department of Computer Science and Technology Tsinghua University Beijing 100084 China

Scalable video quality enhancement refers to the process of enhancing low quality frames using high quality ones in scalable video bitstreams with time-varying qualities. A key problem in the enhancement is how to search for correspondence between high quality and low quality frames. Previous algorithms usually use block-based motion estimation to search for correspondences. Such an approach can hardly estimate scale and rotation transforms and always in- troduces outliers to the motion estimation results. In this paper, we propose a pixel-based outlier-free motion estimation algorithm to solve this problem. In our algorithm, the motion vector for each pixel is calculated with respect to estimate translation, scale, and rotation transforms. The motion relationships between neighboring pixels are considered via the Markov random field model to improve the motion estimation accuracy. Outliers are detected and avoided by taking both blocking effects and matching percentage in scale- invariant feature transform field into consideration. Experiments are conducted in two scenarios that exhibit spatial scalability and quality scalability, respectively. Experimental results demonstrate that, in comparison with previous algorithms, the proposed algorithm achieves better correspondence and avoids the simultaneous introduction of outliers, especially for videos with scale and rotation transforms.

关键词： motion estimation scalable video coding videosuper resolution.

Integrated modeling of spacecraft relative motion dynamics using dual quaternion

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Journal of Systems Engineering and Electronics 2018年第2期29卷 367-377页

作者： PENG xuan SHI Xiaoping gong Yupeng Control and Simulation Center Harbin Institute of Technology Research Center of Satellite Technology Harbin Institute of Technology

To realize high accurate control of relative position and attitude between two spacecrafts, the coupling between position and attitude must be fully considered and a more precise model should be established. This paper breaks the traditional divide and conquer idea, and uses a mathematical tool, namely dual quaternion to establish the integrated 6 degree-of-freedom(6-DOF) model of relative position and attitude, which describes the coupled relative motion in a compact and efficient form and needs less information of the target. Considering the complex operation rules and the unclarity of the current relative motion model in dual quaternion, necessary mathematical foundations are given at first, followed by clear and detailed modeling process and analysis. Finally a generalized proportion-derivative(PD) controller law is designed. The simulation results show that based on the integrated model established by dual quaternion, this control law can achieve a high control accuracy of relative motion.

关键词： relative motion dual quaternion position and attitude coupling integrated modeling

Adhesive Contact of Elastic Solids with Self-Affine Fractal Rough Surfaces

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Acta Mechanica Solida Sinica 2024年第2期37卷 265-270页

作者： xuan-Ming Liang Shi-wen Chen Si-He Wang Zhen-Yuan gong Jun Feng Gang-Feng Wang Department of Engineering Mechanics SVL and MMMLXi’an Jiaotong UniversityXi’an710049China OPPO Mobile Telecommunications Corporation Ltd. Dongguan523860China

The elastic adhesive contact of self-affine fractal rough surfaces against a rigid flat is simulated using the finite element method. An array of nonlinear springs, of which the force-separation law obeys the Lennard–Jones potential, is introduced to account for the interfacial adhesion. For fractal rough surfaces, the interfacial interaction is generally attractive for large mean gaps, but turns repulsive as the gap continuously shrinks. The interfacial interactions at the turning point corresponding to the spontaneous contact are shown for various surfaces. For relatively smooth surfaces, the probability density distributions of repulsion and attraction are nearly symmetric. However, for rougher surfaces, the simulation results suggest a uniform distribution for attraction but a monotonously decreasing distribution with a long tail for repulsion. The pull-off force rises with increasing ratio of the work of adhesion to the equilibrium distance, whereas decreases for solids with a higher elastic modulus and a larger surface roughness. The current study will be helpful for understanding the adhesion of various types of rough solids.

关键词： Fractal rough surfaces Adhesion Contact mechanics Lennard-Jones potential

The Bezout Number of Piecewise Algebraic Curves

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Acta Mathematica Sinica,English Series 2012年第12期28卷 2535-2544页

作者： Dian xuan gong Ren Hong WANG College of Sciences Hebei United Universtiy School of Mathematical Sciences Dalian University of Technology

Based on the discussion of the number of roots of univariate spline and the common zero points of two piecewise algebraic curves, a lower upbound of Bezout number of two piecewise algebraic curves on any given non-obtuse-angled triangulation is found. Bezout number of two piecewise algebraic curves on two different partitions is also discussed in this paper.

关键词： Bezout number piecewise algebraic curve periodic spline univariate spline

铸牢中华民族共同体意识研究回溯与展望(2017—2023)——基于CiteSpace的可视化分析

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三峡大学学报（人文社会科学版） 2025年第1期47卷 29-40,56页

作者：龚志祥谭雯心东北大学秦皇岛分校民族学学院河北秦皇岛066004

本文运用CiteSpace软件绘制可视化知识图谱,分析2017—2023年中国知网CNKI核心期刊(北大核心、CSSCI期刊)铸牢中华民族共同体意识研究领域的1 772篇高质量文献,从发文量及趋势、作者及机构、引用量及高频关键词、多学科跨学科及研究机... 详细信息

本文运用CiteSpace软件绘制可视化知识图谱,分析2017—2023年中国知网CNKI核心期刊(北大核心、CSSCI期刊)铸牢中华民族共同体意识研究领域的1 772篇高质量文献,从发文量及趋势、作者及机构、引用量及高频关键词、多学科跨学科及研究机构合作等进行分析。铸牢中华民族共同体意识研究的发文量自2017年始逐年增长,经过快速上升,达到高水平的平稳增长。铸牢中华民族共同体意识理论体系研究深化仍是热点,实践研究与政策响应研究需进一步拓展和深化。

关键词：铸牢中华民族共同体意识 CiteSpace可视化分析研究现状

Property of Self-similar-like Set

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Acta Mathematicae Applicatae Sinica 2015年第2期31卷 375-386页

作者： Zhi-ying wen xuan ZHAO Department of Mathematical Sciences Tsinghua University National Education Examinations Authority

Self-similar sets（SSS） are the most important class of Fractals and play an important role in the studies in Fractal. In this note, we introduce self-similar-like sets（SSLS） which generalize self-similar sets,we will show some properties of SSLS which distinguish essentially that of SSS, and we will give also some applications of SSLS.

关键词： self-similar sets self-similar-like set generating set Hausdorff dimension